Portable aviation direct-current starting power supply vehicle detector

Abstract

The utility model relates to a portable aviation DC starting power supply vehicle detector comprising a voltage detection circuit used for detecting the positive voltage of a first battery pack and the positive voltage of a second battery pack; the voltage detection circuit comprises a first control switch, a first voltage detection device and a second voltage detection device, one end of the first control switch is used for being connected with the negative electrode of the first battery pack, and the other end of the first control switch is used for being connected with the third control line; two ends of the first voltage detection device are respectively used for connecting the negative electrode of the first battery pack and a paired contact of the first contact of the second contactor, and two ends of the second voltage detection device are respectively used for connecting the negative electrode of the first battery pack and a paired contact of the first contact of the third contactor. The portable detector for the aviation direct-current starting power supply vehicle can conveniently detect the power supply parameter quality of the aviation direct-current starting power supply vehicle, and the detection cost is greatly reduced.

Description

Technical Field

[0001] The utility model generally relates to the field of aviation DC starting power supply vehicles. More specifically, the utility model relates to a portable aviation DC starting power supply vehicle detector. Background Art

[0002] The aviation DC starting power supply vehicle is mainly used to supply power to the aircraft on the ground to meet the needs of ground power-on inspection and engine ground starting. Whether the power supply of the aviation DC starting power supply vehicle is safe and reliable, whether the power parameter quality meets the requirements of the aircraft, and whether it is controlled by the aircraft to cooperate with the work so as to perform boost conversion during engine starting play a crucial role in the safety of airborne equipment and the engine. The aviation DC starting power supply vehicle usually includes two battery packs, and the two battery packs can be switched between two states of parallel connection with each other and series connection with each other, so as to meet various power consumption needs of the aircraft.

[0003] The aviation DC starting power supply vehicle detector is mainly used to detect the power parameter quality of the aviation DC starting power supply vehicle and whether the boost conversion logic for engine starting meets the requirements. Currently, the detection equipment for aviation DC starting power supply vehicles on the market mainly adopts the microcomputer type, and there are also many models. It is mainly composed of a mainframe + software analysis and design, with a complex structure, a large volume, poor portability, and generally high procurement costs. Summary of the Utility Model

[0004] To solve the above one or more technical problems, the utility model provides solutions in the following aspects.

[0005] In a first aspect, the present utility model provides a portable aviation DC starting power vehicle detector. The aviation DC starting power vehicle includes a first battery pack and a second battery pack. The positive pole of the first battery pack is connected in series with the first contact of a second contactor, and the positive pole of the second battery pack is connected in series with the first contact of a third contactor. The positive pole of the first battery pack is also respectively connected to one end of the coil of the second contactor and one end of the coil of the third contactor. The other end of the coil of the second contactor and the other end of the coil of the third contactor are both connected to a third control line. The negative poles of the first battery pack and the second battery pack are connected to each other. The detector includes a voltage detection circuit for detecting the positive pole voltage of the first battery pack and the positive pole voltage of the second battery pack. The voltage detection circuit includes a first control switch, a first voltage detection device, and a second voltage detection device. One end of the first control switch is used to connect to the negative pole of the first battery pack, and the other end is used to connect to the third control line. The two ends of the first voltage detection device are respectively used to connect to the negative pole of the first battery pack and the mating contact of the first contact of the second contactor. The two ends of the second voltage detection device are respectively used to connect to the negative pole of the first battery pack and the mating contact of the first contact of the third contactor.

[0006] Further, the first voltage detection device and the second voltage detection device adopt voltmeters.

[0007] Further, a first fuse is connected in series at one end of the first voltage detection device, and a second fuse is connected in series at one end of the second voltage detection device.

[0008] Further, the mating contact of the first contact of the second contactor is connected to the second contact of a first contactor. The third contact of the first contactor is connected to the negative pole of the second battery pack, and the first contact of the first contactor is connected to the negative pole of the first battery pack. When the coil of the first contactor is in a power-off state, its first contact and third contact are connected. One end of the coil of the first contactor is connected to the negative pole of the first battery pack, and the other end is connected to a first control line. The positive pole of the first battery pack is also connected to a second control line. The detector further includes a boost control circuit for converting the first battery pack and the second battery pack into a series state. The boost control circuit includes a second control switch, and the two ends of the second control switch are respectively used to connect to the first control line and the second control line.

[0009] Further, it further includes a series indication circuit for indicating whether the first battery pack and the second battery pack are in series. The series indication circuit includes a relay, a first resistor, and a first light-emitting diode. The cathode of the first light-emitting diode is used to connect to the negative electrode of the first battery pack, and the anode of the first light-emitting diode is connected to one of a pair of contacts of the relay through the first resistor. The other of the pair of contacts of the relay is used to connect to the positive electrode of the second battery pack; the first end of the coil of the relay is used to connect to the positive electrode of the second battery pack, and the second end thereof is used to connect to the negative electrode of the first battery pack.

[0010] Further, it further includes a freewheeling diode. The anode of the freewheeling diode is connected to the second end of the coil of the relay, and the cathode thereof is connected to the first end of the coil of the relay.

[0011] Further, it further includes a first connection state detection branch for detecting whether the third control line is connected to the positive electrode of the first battery pack. A second resistor and a second light-emitting diode are connected in series on the first connection state detection branch, and the first connection state detection branch is connected in parallel across both ends of the first control switch.

[0012] Further, it further includes a second connection state detection branch for detecting whether the first control line is connected to the negative electrode of the first battery pack and whether the second control line is connected to the positive electrode of the first battery pack; the second connection state detection branch is connected in parallel across both ends of the second control switch, and a third light-emitting diode and a third resistor are connected in series on the second connection state detection branch.

[0013] Further, it further includes a socket. The first terminal of the socket is used to connect to the positive electrode of the first battery pack through the contact of the second contactor and is also used to connect to the second contact of the first contactor; the second terminal of the socket is used to connect to the positive electrode of the second battery pack through the contact of the third contactor; the third terminal of the socket is used to connect to the negative electrode of the first battery pack; the fourth terminal of the socket is used to connect to the first control line; the fourth terminal of the socket is used to connect to the second control line; the sixth terminal of the socket is used to connect to the third control line; the first voltage detection device is connected in series between the first terminal and the third terminal, the second voltage detection device and the coil of the relay are respectively connected in series between the second terminal and the third terminal, the first control switch is connected in series between the third terminal and the sixth terminal, and the second control switch is connected in series between the fourth terminal and the fifth terminal.

[0014] The technical effects of the present utility model are as follows: By using the portable aviation DC starting power supply vehicle detector of the present utility model, it is possible to conveniently, quickly, and accurately detect whether the power parameter quality of the aviation DC starting power supply vehicle meets the requirements. Moreover, the portable aviation DC starting power supply vehicle detector of the present utility model has a simple structure, low production cost, small size, light weight, does not require additional power supply, and is convenient to carry and use.

[0015] Further, by setting up a boost control circuit, it is possible to provide an analog engine starting boost conversion control signal to the starting power supply vehicle, so that the connection state between the first battery pack and the second battery pack of the two-way power supply in the starting power supply vehicle is converted from parallel to series through the contactor logic circuit, in order to detect whether the power output after the two battery packs are connected in series meets the requirements for aircraft use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By referring to the accompanying drawings and reading the following detailed description, the above and other objects, features, and advantages of the exemplary embodiments of the present utility model will become readily understood. In the drawings, several embodiments of the present utility model are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0017] Figure 1 is a schematic diagram of the internal circuit structure of an aviation DC starting power supply vehicle in the prior art;

[0018] Figure 2 is a schematic diagram of the circuit structure of the portable aviation DC starting power supply vehicle detector according to an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without making creative efforts fall within the protection scope of the present utility model.

[0020] Next, the specific embodiments of the present utility model will be described in detail with reference to the accompanying drawings.

[0021] Embodiment of the portable aviation DC starting power supply vehicle detector:

[0022] As Figure 1 and Figure 2As shown in the figure, the portable aviation DC starting power supply vehicle detector of the present utility model is used to detect an aviation DC starting power supply vehicle, which includes a first battery pack and a second battery pack. The positive pole of the first battery pack is connected in series with the first contact of the second contactor KM2, and the positive pole of the second battery pack is connected in series with the first contact of the third contactor KM3. The positive pole of the first battery pack is also respectively connected to one end of the coil of the second contactor KM2 and one end of the coil of the third contactor KM3. The other end of the coil of the second contactor KM2 and the other end of the coil of the third contactor KM3 are both connected to the third control line. The negative poles of the first battery pack and the second battery pack are connected to each other. The detector includes a voltage detection circuit, and the voltage detection circuit is used to detect the positive pole voltage of the first battery pack and the positive pole voltage of the second battery pack. The voltage detection circuit includes a first control switch K1, a first voltage detection device V1, and a second voltage detection device V2. One end of the first control switch is used to connect to the negative pole of the first battery pack, and the other end is used to connect to the third control line. The two ends of the first voltage detection device are respectively used to connect to the negative pole of the first battery pack and the mating contact of the first contact of the second contactor KM2. The two ends of the second voltage detection device are respectively used to connect to the negative pole of the first battery pack and the mating contact of the first contact of the third contactor.

[0023] In this embodiment, the first voltage detection device and the second voltage detection device can be a voltmeter or other suitable voltage measuring devices.

[0024] The working principle of the voltage detection circuit in this embodiment is as follows: After closing the control switch K1, the coils of the second contactor KM2 and the third contactor KM3 are energized. The first contact of the second contactor KM2 and its mating node are connected, and the first contact of the third contactor KM3 and its mating node are connected. Thus, the two ends of the first voltage detection device are respectively connected to the positive pole and the negative pole of the first battery pack, and the two ends of the second voltage detection device are respectively connected to the negative pole of the first battery pack and the positive pole of the second battery pack, so as to measure the voltage of the positive pole of the first battery pack and the positive pole of the second battery pack.

[0025] Using the portable aviation DC starting power supply vehicle detector of the present utility model can conveniently detect whether the power parameter quality of the aviation DC starting power supply vehicle meets the requirements, and the portable aviation DC starting power supply vehicle detector of the present utility model has a simple structure and low production cost.

[0026] In order to protect the first voltage detection device and the second voltage detection device, a first fuse FU1 is also connected in series at one end of the first voltage detection device, and a second fuse FU2 is also connected in series at one end of the second voltage detection device.

[0027] In one embodiment, the paired contact of the first contact of the second contactor KM2 is connected to the second contact of the first contactor KM1, the third contact of the first contactor KM1 is connected to the negative electrode of the second battery pack, and the first contact of the first contactor KM1 is connected to the negative electrode of the first battery pack; when the coil of the first contactor KM1 is in the power-off state, its first contact and third contact are closed; one end of the coil of the first contactor KM1 is connected to the negative electrode of the first battery pack, and the other end is connected to the first control line; the positive electrode of the first battery pack is also connected to the second control line; the portable aviation DC starting power vehicle detector further includes a boost control circuit for converting the first battery pack and the second battery pack into a series state, and the boost control circuit includes a second control switch k2, and both ends of the second control switch k2 are respectively used for connecting the first control line and the second control line.

[0028] The working principle of the boost control circuit in this embodiment is as follows: when the second control switch k2 is controlled to be closed, the coil of the first contactor KM1 is powered on, its third contact and second contact are disconnected, and the third contact and first contact are connected, so as to disconnect the connection between the negative electrodes of the first battery pack and the second battery pack, and connect the positive electrode of the first battery pack and the negative electrode of the second battery pack, so that the first battery pack and the second battery pack are converted from a parallel state to a series state. At this time, the positive voltage of the second battery pack is equal to the sum of the output voltages of the two battery packs in the parallel state.

[0029] By setting the boost control circuit, an analog engine starting boost conversion control signal can be provided to the starting power vehicle, so that the connection state between the first battery pack and the second battery pack of the two power supplies in the starting power vehicle is converted from parallel to series through the contactor logic circuit, so as to detect whether the power supply output after the two battery packs are connected in series meets the requirements of aircraft use.

[0030] In one embodiment, it further includes a series indication circuit for indicating whether the first battery pack and the second battery pack are connected in series. The series indication circuit includes a relay KV, a first resistor R1, and a first light-emitting diode D1. The cathode of the first light-emitting diode KM1 is used to connect to the negative electrode of the first battery pack, and the anode of the first light-emitting diode D1 is connected to one of a pair of contacts of the relay KV through the first resistor R1, and the other of the pair of contacts of the relay KV is used to connect to the positive electrode of the second battery pack; the first end of the coil of the relay KV is used to connect to the positive electrode of the second battery pack, and its second end is used to connect to the negative electrode of the first battery pack.

[0031] The working principle of the series indication circuit in this embodiment is as follows: when the two battery packs are converted from a parallel state to a series state, the voltage across the coil of the relay KV becomes larger, and the contacts of the relay KV start to act, changing from the normally open state to the normally closed state, so that the second light-emitting diode D1 lights up.

[0032] By setting up a series connection indicating circuit, it is possible to conveniently confirm whether the two battery packs are converted from a parallel state to a series state after the second control switch is closed, further improving the accuracy of the detection result of the aviation DC starting power supply vehicle.

[0033] In one embodiment, in order to prevent the induced electromotive force generated when the coil of the relay KV is turned on and off from damaging other components in the circuit, a freewheeling diode D is further included. The anode of the freewheeling diode D is connected to the second end of the coil of the relay KV, and its cathode is connected to the first end of the coil of the relay KV.

[0034] In one embodiment, a first connection state detection branch for detecting whether the third control line is connected to the positive electrode of the first battery pack is further included. A second resistor R2 and a second light-emitting diode D2 are connected in series on the first connection state detection branch, and the first connection state detection branch is connected in parallel across both ends of the first control switch.

[0035] The working principle of the first connection state detection branch in this embodiment is as follows: When the portable aviation DC starting power supply vehicle detector of the present invention is connected to the aviation DC starting power supply vehicle, if the second light-emitting diode D2 lights up normally, it indicates that the third control line is normally connected to the positive electrode of the first battery pack.

[0036] By setting up the first connection state detection branch, it is possible to conveniently detect whether the third control line of the aviation DC starting power supply vehicle can be used normally.

[0037] In one embodiment, a second connection state detection branch is further included. The second connection state detection branch is used to detect whether the first control line is connected to the negative electrode of the first battery pack and whether the second control line is connected to the positive electrode of the first battery pack; the second connection state detection branch is connected in parallel across both ends of the second control switch K2, and a third light-emitting diode D3 and a third resistor R3 are connected in series on the second connection state detection branch.

[0038] By setting up the second connection state detection branch, it is possible to conveniently detect whether the first control line and the second control line of the aviation DC starting power supply vehicle can be used normally.

[0039] In one embodiment, it further includes socket A. The first terminal of the socket is used to be connected to the positive electrode of the first battery pack through the contact of the second contactor, and is also used to connect to the second contact of the first contactor; the second terminal of the socket is used to be connected to the positive electrode of the second battery pack through the contact of the third contactor; the third terminal of the socket is used to connect to the negative electrode of the first battery pack; the fourth terminal of the socket is used to connect to the first control line; the fourth terminal of the socket is used to connect to the second control line; the sixth terminal of the socket is used to connect to the third control line; the first voltage detection device V1 is connected in series between the first terminal and the third terminal, the second voltage detection device V2 and the coil of the relay KV are respectively connected in series between the second terminal and the third terminal, the first control switch is connected in series between the third terminal 3 and the sixth terminal 6, and the second control switch is connected in series between the fourth terminal and the fifth terminal.

[0040] By providing the socket, it is convenient for the connection between the portable aviation DC starting power vehicle detector and the aviation DC starting power vehicle.

[0041] The control panel of the aviation DC starting power vehicle detector of the present utility model adopts a symmetrical design. The panel consists of an operation control part and a parameter display part. A starting power vehicle socket is designed at the top of the device. At the same time, the shell is made of 1.5 mm galvanized steel plate, with high mechanical strength and stable structure, providing good support for the assembly of each component inside the device. At the same time, it adopts a sealed design, with strong anti-electromagnetic interference ability, moisture-proof, dust-proof, and extends the service life of the device.

[0042] The aviation DC starting power vehicle detector of the present utility model can conveniently, quickly and accurately detect the power supply parameter quality and engine starting boost conversion of various types of aviation DC starting power vehicles in our school, as well as starting power supplies in hangars, aircraft shelters, test sites, and ground battery cars and other equipment. The detection device is small in size, light in weight, does not require additional power supply, and is convenient to carry and use.

[0043] In the above description of this specification, unless otherwise clearly specified and defined, terms such as "fixed", "installed", "connected" or "coupled" should be understood in a broad sense. For example, for the term "connected", it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection or the interaction relationship between two components. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meaning of the above terms in the present utility model according to specific circumstances.

[0044] Based on the above description of this specification, those skilled in the art can also understand the terms used as follows. For example, terms indicating orientation or positional relationship such as "upper", "lower", "front", "rear", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "center", "longitudinal", "transverse", "clockwise" or "counterclockwise", etc. are based on the orientation or positional relationship shown in the drawings of this specification. It is only for the purpose of facilitating the description of the solution of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in the specific orientation. Therefore, the above terms of orientation or positional relationship cannot be understood or interpreted as a limitation to the solution of the present invention.

[0045] In addition, the terms "first" or "second" etc. used in this specification to refer to numbers or ordinals are only for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "a plurality" is at least two, such as two, three or more, etc., unless otherwise specifically defined.

[0046] Although this specification has shown and described multiple embodiments of the present invention, it is obvious to those skilled in the art that such embodiments are provided only by way of example. Those skilled in the art will think of many ways of modification, change and substitution without departing from the idea and spirit of the present invention. It should be understood that various alternative solutions to the embodiments of the present invention described herein can be adopted in the process of practicing the present invention.

Claims

1. A portable aviation DC starting power supply vehicle detector, the aviation DC starting power supply vehicle comprising a first battery pack and a second battery pack, the positive pole of the first battery pack being connected in series to the first contact of a second contactor, and the positive pole of the second battery pack being connected in series to the first contact of a third contactor; the positive pole of the first battery pack is also respectively connected to one end of the coil of the second contactor and one end of the coil of the third contactor, and the other end of the coil of the second contactor and the other end of the coil of the third contactor are both connected to a third control line; the negative poles of the first battery pack and the second battery pack are connected to each other; characterized in that, The detector includes a voltage detection circuit for detecting the positive voltage of the first battery pack and the positive voltage of the second battery pack. The voltage detection circuit includes a first control switch, a first voltage detection device, and a second voltage detection device. One end of the first control switch is used to connect to the negative electrode of the first battery pack, and the other end is used to connect to the third control line. The two ends of the first voltage detection device are respectively used to connect to the negative electrode of the first battery pack and the paired contact of the first contact of the second contactor. The two ends of the second voltage detection device are respectively used to connect to the negative electrode of the first battery pack and the paired contact of the first contact of the third contactor.

2. The portable aviation DC starting power vehicle detector according to claim 1, characterized in that, The first voltage detection device and the second voltage detection device adopt voltmeters.

3. The portable aviation DC starting power vehicle detector according to claim 1, characterized in that A first fuse is also connected in series at one end of the first voltage detection device, and a second fuse is also connected in series at one end of the second voltage detection device.

4. The portable aviation DC starting power supply vehicle detector according to claim 1, characterized in that, The paired contact of the first contact of the second contactor is connected to the second contact of the first contactor. The third contact of the first contactor is connected to the negative electrode of the second battery pack. The first contact of the first contactor is connected to the negative electrode of the first battery pack. When the coil of the first contactor is in the power-off state, its first contact and third contact are connected. One end of the coil of the first contactor is connected to the negative electrode of the first battery pack, and the other end is connected to the first control line. The positive electrode of the first battery pack is also connected to the second control line. The detector further includes a boost control circuit for converting the first battery pack and the second battery pack into a series state. The boost control circuit includes a second control switch, and the two ends of the second control switch are respectively used to connect to the first control line and the second control line.

5. The portable aviation DC starting power vehicle detector according to claim 1, characterized in that, It further includes a series indication circuit for indicating whether the first battery pack and the second battery pack are in series. The series indication circuit includes a relay, a first resistor, and a first light-emitting diode. The cathode of the first light-emitting diode is used to connect to the negative electrode of the first battery pack. The anode of the first light-emitting diode is connected to one of a pair of contacts of the relay through the first resistor. The other of the pair of contacts of the relay is used to connect to the positive electrode of the second battery pack. The first end of the coil of the relay is used to connect to the positive electrode of the second battery pack, and the second end is used to connect to the negative electrode of the first battery pack.

6. The portable aviation DC starting power vehicle detector according to claim 5, characterized in that, It further includes a freewheeling diode. The anode of the freewheeling diode is connected to the second end of the coil of the relay, and the cathode is connected to the first end of the coil of the relay.

7. The portable aviation DC starting power vehicle detector according to claim 1, characterized in that It further includes a first connection state detection branch for detecting whether the third control line is connected to the positive electrode of the first battery pack. A second resistor and a second light-emitting diode are connected in series on the first connection state detection branch, and the first connection state detection branch is connected in parallel across the two ends of the first control switch.

8. The portable aviation DC starting power vehicle detector according to claim 4, characterized in that, It further includes a second connection state detection branch for detecting whether the first control line is connected to the negative electrode of the first battery pack and whether the second control line is connected to the positive electrode of the first battery pack. The second connection state detection branch is connected in parallel across the two ends of the second control switch, and a third light-emitting diode and a third resistor are connected in series on the second connection state detection branch.

9. The portable aviation DC starting power supply vehicle detector according to claim 4, characterized in that, It further includes a socket. The first terminal of the socket is used to be connected to the positive electrode of the first battery pack through the contact of the second contactor, and is also used to connect to the second contact of the first contactor; the second terminal of the socket is used to be connected to the positive electrode of the second battery pack through the contact of the third contactor; the third terminal of the socket is used to connect to the negative electrode of the first battery pack; the fourth terminal of the socket is used to connect to the first control line; the fourth terminal of the socket is used to connect to the second control line; the sixth terminal of the socket is used to connect to the third control line; the first voltage detection device is connected in series between the first terminal and the third terminal, the second voltage detection device and the coil of the relay are respectively connected in series between the second terminal and the third terminal, the first control switch is connected in series between the third terminal and the sixth terminal, and the second control switch is connected in series between the fourth terminal and the fifth terminal.

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